package lesson02;

import java.math.BigInteger;

public class TestMain7 {

	public static void main(String[] args) {
		BigInteger bi = new BigInteger("100");
		BigInteger result = new BigInteger("1");
		while (bi.doubleValue() != 1) {

			result = result.multiply(bi);
			bi = bi.subtract(new BigInteger("1"));
		}
		System.out.println(result);
	}
}
